How severe is CVE-2022-43955?

CVE-2022-43955 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-43955 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43955?

CVE-2022-43955 affects Fortinet Fortiweb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43955?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-43955 published?

CVE-2022-43955 was published on 2023-04-11 and last updated on 2026-06-17.

CVE-2022-43955

CVE-2022-43955 is a high-severity vulnerability in Fortinet Fortiweb with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fortinet Fortiweb
Published: 2023-04-11
Last modified: 2026-06-17

Description

An improper neutralization of input during web page generation [CWE-79] in the FortiWeb web interface 7.0.0 through 7.0.3, 6.3.0 through 6.3.21, 6.4 all versions, 6.2 all versions, 6.1 all versions and 6.0 all versions may allow an unauthenticated and remote attacker to perform a reflected cross site scripting attack (XSS) via injecting malicious payload in log entries used to build report.

Frequently asked questions

What is CVE-2022-43955?: An improper neutralization of input during web page generation [CWE-79] in the FortiWeb web interface 7.0.0 through 7.0.3, 6.3.0 through 6.3.21, 6.4 all versions, 6.2 all versions, 6.1 all versions and 6.0 all versions may allow an unauthenticated and remote attacker to perform a reflected cross site scripting attack (XSS) via injecting malicious payload in log entries used to build report.
How severe is CVE-2022-43955?: CVE-2022-43955 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-43955 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43955?: CVE-2022-43955 affects Fortinet Fortiweb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43955?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-43955 published?: CVE-2022-43955 was published on 2023-04-11 and last updated on 2026-06-17.

References

https://fortiguard.com/psirt/FG-IR-22-428

Affected products (1)

cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*

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